Wyze Duo Cam Doorbell is our most advanced battery-powered video doorbell yet. Dual camera views for people and packages, 2K video and local storage, two-way audio, real-time AI detections and alerts, and motion-activated voice deterrence. Includes Wyze Wi-Fi Chime and Wyze Removable Battery Pack and additional Battery so you always have a backup. You can enable 24/7 local recording when you add a MicroSD card (sold separately) and set up the doorbell with hardwired power.